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Redefining enums/structs/unions of 0 size is no longer treated as declarations and thus forbidden.

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acqn 2020-08-03 01:31:52 +08:00 committed by Oliver Schmidt
parent cdfc1afd89
commit f59d6b8f6a
2 changed files with 15 additions and 9 deletions
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4
src/cc65/declare.c
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@ -920,7 +920,7 @@ NextMember: if (CurTok.Tok != TOK_COMMA) {
LeaveStructLevel ();
/* Make a real entry from the forward decl and return it */
return AddStructSym (Name, SC_UNION, UnionSize, FieldTab);
return AddStructSym (Name, SC_UNION | SC_DEF, UnionSize, FieldTab);
}
@ -1102,7 +1102,7 @@ NextMember: if (CurTok.Tok != TOK_COMMA) {
LeaveStructLevel ();
/* Make a real entry from the forward decl and return it */
return AddStructSym (Name, SC_STRUCT, StructSize, FieldTab);
return AddStructSym (Name, SC_STRUCT | SC_DEF, StructSize, FieldTab);
}

20
src/cc65/symtab.c
View File

@ -52,13 +52,13 @@
#include "declare.h"
#include "error.h"
#include "funcdesc.h"
#include "function.h"
#include "global.h"
#include "input.h"
#include "stackptr.h"
#include "symentry.h"
#include "typecmp.h"
#include "symtab.h"
#include "function.h"
#include "input.h"
@ -728,6 +728,10 @@ SymEntry* AddEnumSym (const char* Name, const Type* Type, SymTable* Tab)
Entry->V.E.SymTab = Tab;
Entry->V.E.Type = Type;
if (Type != 0) {
Entry->Flags |= SC_DEF;
}
/* Add it to the current table */
AddSymEntry (CurTagTab, Entry);
}
@ -738,11 +742,12 @@ SymEntry* AddEnumSym (const char* Name, const Type* Type, SymTable* Tab)
SymEntry* AddStructSym (const char* Name, unsigned Type, unsigned Size, SymTable* Tab)
SymEntry* AddStructSym (const char* Name, unsigned Flags, unsigned Size, SymTable* Tab)
/* Add a struct/union entry and return it */
{
SymTable* CurTagTab = TagTab;
SymEntry* Entry;
unsigned Type = (Flags & SC_TYPEMASK);
/* Type must be struct or union */
PRECONDITION (Type == SC_STRUCT || Type == SC_UNION);
@ -756,13 +761,14 @@ SymEntry* AddStructSym (const char* Name, unsigned Type, unsigned Size, SymTable
/* Existing symbol is not a struct */
Error ("Symbol '%s' is already different kind", Name);
Entry = 0;
} else if (Size > 0 && Entry->V.S.Size > 0) {
} else if ((Entry->Flags & Flags & SC_DEF) == SC_DEF) {
/* Both structs are definitions. */
Error ("Multiple definition for '%s'", Name);
Entry = 0;
} else {
/* Define the struct size if it is given */
if (Size > 0) {
/* Define the struct size if it is a definition */
if ((Flags & SC_DEF) == SC_DEF) {
Entry->Flags = Flags;
Entry->V.S.SymTab = Tab;
Entry->V.S.Size = Size;
}
@ -777,7 +783,7 @@ SymEntry* AddStructSym (const char* Name, unsigned Type, unsigned Size, SymTable
if (Entry == 0) {
/* Create a new entry */
Entry = NewSymEntry (Name, Type);
Entry = NewSymEntry (Name, Flags);
/* Set the struct data */
Entry->V.S.SymTab = Tab;